• In linear algebra, a nilpotent matrix is a square matrix N such that N k = 0 {\displaystyle N^{k}=0\,} for some positive integer k {\displaystyle k} ...
    10 KB (1,974 words) - 21:06, 14 April 2025
  • states that any matrix is uniquely the sum of a diagonalizable matrix and a nilpotent matrix. Over an algebraically closed field, diagonalizable matrices...
    27 KB (4,692 words) - 21:03, 14 April 2025
  • See nilpotent matrix for more. In the factor ring Z / 9 Z {\displaystyle \mathbb {Z} /9\mathbb {Z} } , the equivalence class of 3 is nilpotent because...
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  • triangular matrix are also 0, the matrix is called strictly (lower or upper) triangular. All finite strictly triangular matrices are nilpotent of index...
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  • the zero matrix. Identity matrix, the multiplicative identity for matrices Matrix of ones, a matrix where all elements are one Nilpotent matrix Single-entry...
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  • The matrix PX is idempotent. More generally, the trace of any idempotent matrix, i.e. one with A2 = A, equals its own rank. The trace of a nilpotent matrix...
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  • i.e. when T is a square matrix (Nilpotent matrix) with complex entries, σ(T) = {0} if and only if T is similar to a matrix whose only nonzero entries...
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  • {e^{4}+1}{2e}}\\\end{bmatrix}}.} A matrix N is nilpotent if Nq = 0 for some integer q. In this case, the matrix exponential eN can be computed directly...
    55 KB (10,481 words) - 17:15, 27 February 2025
  • The adjacency matrix can be used to determine whether or not the graph is connected. If a directed graph has a nilpotent adjacency matrix (i.e., if there...
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  • inverse B − 1 {\displaystyle B^{-1}} and N {\displaystyle N} is a nilpotent matrix, then A D = [ B − 1 0 0 0 ] {\displaystyle A^{D}={\begin{bmatrix}B...
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  • with M nilpotent, commuting with N and hence L. But then 0 = S2 − T2 = 2(L − M)(I + (L + M)/2). Since L and M commute, the matrix L + M is nilpotent and...
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  • (the identity matrix), for any integer a between 0 and n inclusive. If N is any nilpotent matrix, then N is similar to a block diagonal matrix of the form...
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  • Unipotent (redirect from Unipotent matrix)
    that r − 1 is a nilpotent element; in other words, (r − 1)n is zero for some n. In particular, a square matrix M is a unipotent matrix if and only if its...
    11 KB (1,826 words) - 05:52, 19 May 2025
  • 1&0\\0&0\end{bmatrix}}.} For n ≥ 2, the matrix ring Mn(R) over a nonzero ring has zero divisors and nilpotent elements; the same holds for the ring of...
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  • Thumbnail for Nilpotent group
    In mathematics, specifically group theory, a nilpotent group G is a group that has an upper central series that terminates with G. Equivalently, it has...
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  • Thumbnail for List of named matrices
    matrices used in mathematics, science and engineering. A matrix (plural matrices, or less commonly matrixes) is a rectangular array of numbers called entries...
    32 KB (1,336 words) - 21:01, 14 April 2025
  • Thumbnail for Lie group
    Lie group (redirect from Matrix Lie group)
    with the group of unit quaternions. The Heisenberg group is a connected nilpotent Lie group of dimension ⁠ 3 {\displaystyle 3} ⁠, playing a key role in...
    65 KB (9,490 words) - 15:29, 22 April 2025
  • Jordan normal form (category Matrix theory)
    Jordan block corresponding to λ is of the form λI + N, where N is a nilpotent matrix defined as Nij = δi,j−1 (where δ is the Kronecker delta). The nilpotency...
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  • zero matrix, corresponding to the dual number ε {\displaystyle \varepsilon } . Generally, if ε {\displaystyle \varepsilon } is a nilpotent matrix, then...
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  • splitting of A. Gauss–Seidel method Jacobi method List of matrices Nilpotent matrix Successive over-relaxation Burden & Faires (1993, p. 404) Isaacson...
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  • Thumbnail for Weyr canonical form
    where D {\displaystyle D} is a diagonal matrix, N {\displaystyle N} is a nilpotent matrix, and [ D , N ] = 0 {\displaystyle [D,N]=0} , justifying...
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  • similarly. A nilpotent element is an element a such that an = 0 for some n > 0. One example of a nilpotent element is a nilpotent matrix. A nilpotent element...
    99 KB (13,738 words) - 15:38, 7 May 2025
  • the Jordan normal form of matrices we know that each nilpotent matrix is conjugate to a unique matrix with Jordan blocks of sizes λ 1 ≥ λ 2 ≥ … ≥ λ r , {\displaystyle...
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  • Jordan–Chevalley decomposition which expresses a matrix as a sum of a diagonalizable and a nilpotent part. A Hermitian matrix has all real eigenvalues and can always...
    12 KB (2,213 words) - 10:45, 12 November 2024
  • then so is D and D−1(PAP−1) is equal to the identity plus a nilpotent matrix. But such a matrix is always invertible (if Nk = 0 the inverse of 1 − N is 1...
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  • the mathematical discipline of matrix theory, a Jordan matrix, named after Camille Jordan, is a block diagonal matrix over a ring R (whose identities...
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  • Schur decomposition (category Matrix theory)
    triangular matrix U as U = D + N, where D is diagonal and N is strictly upper triangular (and thus a nilpotent matrix). The diagonal matrix D contains...
    12 KB (1,518 words) - 11:33, 23 April 2025
  • Thumbnail for Lie algebra
    classification of Lie groups. Analogously to abelian, nilpotent, and solvable groups, one can define abelian, nilpotent, and solvable Lie algebras. A Lie algebra...
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  • complex matrix A {\displaystyle A} is a factorization of the form A = U P {\displaystyle A=UP} , where U {\displaystyle U} is a unitary matrix, and P {\displaystyle...
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  • For groups, the existence of a central series means it is a nilpotent group; for matrix rings (considered as Lie algebras), it means that in some basis...
    14 KB (2,253 words) - 17:37, 8 January 2025